Electrophoretic mobility of fluorophore labeled particles in gel

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435287, 422 8208, 356344, 935 85, 935 77, 204299R, 2041801, 2041828, G12Q 168, C12M 100, G01N 2100

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active

052158837

ABSTRACT:
A process and apparatus for detecting the mobility of fluorescently labeled molecules in response to a force is disclosed. The fluorescently labeled molecules are placed in a fluid medium such as an electrophoretic gel in a capillary tube. An electric field is applied to induce the movement of the molecules. A region of the labeled molecules is photobleached leaving a geometrically defined region which has not been photobleached. The region which has not been photobleached is excited by a reading beam. The reading and the photobleaching beams can be generated by focusing a laser through a diffraction grading. The intensity produced by the interaction of the reading beam in the geometrically defined region of the molecule is detected by a photo detector. In detecting more than one sp

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